chasm

Etymology

From Latin chasma, from Ancient Greek χάσμα (khásma, “abyss, cleft”).

noun

1. (geology, planetology) A deep, steep-sided rift, gap or fissure; a gorge or abyss.
   But always and ever there is a yawning chasm below[.] 2019, Li Huang, James Lambert, “Another Arrow for the Quiver: A New Methodology for Multilingual Researchers”, in Journal of Multilingual and Multicultural Development, →DOI, page 1
2. (by extension) A large difference of opinion.
   Chelsea may not have regarded themselves as title rivals to City over the whole season but this was a harrowing illustration of the current chasm between the two sides and made for disturbing viewing for the Italian. 2019, 10 February, Phil McNulty, “Manchester City 6-0 Chelsea”, in BBC Sport